Exemplo n.º 1
0
func (mw *MyMainWindow) drawStuff(canvas *walk.Canvas, updateBounds walk.Rectangle) error {
	bmp, err := createBitmap()
	if err != nil {
		return err
	}
	defer bmp.Dispose()

	bounds := mw.paintWidget.ClientBounds()

	rectPen, err := walk.NewCosmeticPen(walk.PenSolid, walk.RGB(255, 0, 0))
	if err != nil {
		return err
	}
	defer rectPen.Dispose()

	if err := canvas.DrawRectangle(rectPen, bounds); err != nil {
		return err
	}

	ellipseBrush, err := walk.NewHatchBrush(walk.RGB(0, 255, 0), walk.HatchCross)
	if err != nil {
		return err
	}
	defer ellipseBrush.Dispose()

	if err := canvas.FillEllipse(ellipseBrush, bounds); err != nil {
		return err
	}

	linesBrush, err := walk.NewSolidColorBrush(walk.RGB(0, 0, 255))
	if err != nil {
		return err
	}
	defer linesBrush.Dispose()

	linesPen, err := walk.NewGeometricPen(walk.PenDash, 8, linesBrush)
	if err != nil {
		return err
	}
	defer linesPen.Dispose()

	if err := canvas.DrawLine(linesPen, walk.Point{bounds.X, bounds.Y}, walk.Point{bounds.Width, bounds.Height}); err != nil {
		return err
	}
	if err := canvas.DrawLine(linesPen, walk.Point{bounds.X, bounds.Height}, walk.Point{bounds.Width, bounds.Y}); err != nil {
		return err
	}

	bmpSize := bmp.Size()
	if err := canvas.DrawImage(bmp, walk.Point{(bounds.Width - bmpSize.Width) / 2, (bounds.Height - bmpSize.Height) / 2}); err != nil {
		return err
	}

	return nil
}
Exemplo n.º 2
0
func main() {
	rand.Seed(time.Now().UnixNano())

	model := NewFooModel()

	MainWindow{
		Title:  "Walk TableView Example",
		Size:   Size{800, 600},
		Layout: VBox{},
		Children: []Widget{
			PushButton{
				Text:      "Reset Rows",
				OnClicked: model.ResetRows,
			},
			TableView{
				AlternatingRowBGColor: walk.RGB(255, 255, 224),
				CheckBoxes:            true,
				ColumnsOrderable:      true,
				Columns: []TableViewColumn{
					{Title: "#"},
					{Title: "Bar"},
					{Title: "Baz", Format: "%.2f", Alignment: AlignFar},
					{Title: "Quux", Format: "2006-01-02 15:04:05", Width: 150},
				},
				Model: model,
			},
		},
	}.Run()
}
Exemplo n.º 3
0
func createBitmap() (*walk.Bitmap, error) {
	bounds := walk.Rectangle{Width: 200, Height: 200}

	bmp, err := walk.NewBitmap(bounds.Size())
	if err != nil {
		return nil, err
	}

	succeeded := false
	defer func() {
		if !succeeded {
			bmp.Dispose()
		}
	}()

	canvas, err := walk.NewCanvasFromImage(bmp)
	if err != nil {
		return nil, err
	}
	defer canvas.Dispose()

	brushBmp, err := walk.NewBitmapFromFile("../img/plus.png")
	if err != nil {
		return nil, err
	}
	defer brushBmp.Dispose()

	brush, err := walk.NewBitmapBrush(brushBmp)
	if err != nil {
		return nil, err
	}
	defer brush.Dispose()

	if err := canvas.FillRectangle(brush, bounds); err != nil {
		return nil, err
	}

	font, err := walk.NewFont("Times New Roman", 40, walk.FontBold|walk.FontItalic)
	if err != nil {
		return nil, err
	}
	defer font.Dispose()

	if err := canvas.DrawText("Walk Drawing Example", font, walk.RGB(0, 0, 0), bounds, walk.TextWordbreak); err != nil {
		return nil, err
	}

	succeeded = true

	return bmp, nil
}
Exemplo n.º 4
0
func NewMyWidget(parent walk.Container) (*MyWidget, error) {
	w := new(MyWidget)

	if err := walk.InitWidget(
		w,
		parent,
		myWidgetWindowClass,
		win.WS_VISIBLE,
		0); err != nil {

		return nil, err
	}

	bg, err := walk.NewSolidColorBrush(walk.RGB(0, 255, 0))
	if err != nil {
		return nil, err
	}
	w.SetBackground(bg)

	return w, nil
}